Add support for xip_sram binary type

src/rp2_common/pico_standard_link/CMakeLists.txt

@@ -75,6 +75,16 @@ if (NOT TARGET pico_standard_link)
     #
     # \param\ TYPE The binary type to set
     function(pico_set_binary_type TARGET TYPE)
+        # catch special cases
+        if (TYPE STREQUAL "xip_sram")
+            if (PICO_RP2350)
+                pico_set_modified_binary_type(${TARGET} sram RAM 0x13ffc000 12k SCRATCH_X 0x13fff000 2k SCRATCH_Y 0x13fff800 2k)
+                target_compile_definitions(${TARGET} PRIVATE PICO_USE_SW_SPIN_LOCKS=0 PICO_USE_XIP_SRAM=1) # exclusives only work in main SRAM on RP2350
+            else()
+                message(FATAL_ERROR "xip_sram binary type is only supported on RP2350")
+            endif()
+            return()
+        endif()
         set_target_properties(${TARGET} PROPERTIES PICO_TARGET_BINARY_TYPE ${TYPE})
     endfunction()
 

test/CMakeLists.txt

@@ -13,4 +13,5 @@ if (PICO_ON_DEVICE)
     add_subdirectory(cmsis_test)
     add_subdirectory(pico_sem_test)
     add_subdirectory(pico_sha256_test)
+    add_subdirectory(pico_xip_sram_test)
 endif()

test/pico_xip_sram_test/CMakeLists.txt

@@ -0,0 +1,7 @@
+if (NOT PICO_RP2040)
+    add_executable(pico_xip_sram_test pico_xip_sram_test.c)
+    target_link_libraries(pico_xip_sram_test PRIVATE pico_stdlib)
+    pico_set_binary_type(pico_xip_sram_test xip_sram)
+    pico_package_uf2_output(pico_xip_sram_test)
+    pico_add_extra_outputs(pico_xip_sram_test)
+endif()

test/pico_xip_sram_test/pico_xip_sram_test.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+#include "pico/stdlib.h"
+
+
+int main(void) {
+    stdio_init_all();
+    printf("pico_xip_sram_test begins\n");
+}